Chapter 10: Micromineral (Molybdenum)

Question 1

present in all parts of the body in minute amount

concentrated in liver, bones, and kidneys

Answer 1

molybdenum (Mo)

Question 2

molybdenum - functions

participate on _____ (redox) reactions

Answer 2

oxidation-reduction

Question 3

molybdenum - functions

cofactor for 3 enzymes, which catalyze redox reactions

Answer 3

-xanthine oxidase
-sulfite oxidase
-aldehyde oxidase

Question 4

molybdenum - functions

can hydroxylate purines, pteridines, pyrimidines, and other heterocyclic nitrogen-containing compounds

Answer 4

xanthine oxidase

Question 5

molybdenum - functions

the mitochondrial enzyme catalyzes the terminal step in the metabolism of sulfur-containing amino acids

Answer 5

sulfite oxidase

Question 6

molybdenum - functions

participates in the metabolism of purines

Answer 6

aldehyde oxidase

Question 7

molybdenum - absorption and metabolism

absorption sites are the _____ and the _____ where 25-80% of dietary Mo is absorbed

Answer 7

stomach and the small intestine

Question 8

molybdenum - absorption and metabolism

_____ is the major route of elimination but i also excreted via the bile to a lesser extent

Answer 8

urinary excretion

Question 9

molybdenum - interrelationship with other nutrients

recommended is based on US RDA of

Answer 9

45 g per day

Question 10

molybdenum - deficiency

rare unless the diet is particularly rich in antagonistic substances such as _____ (3)

Answer 10

sulfate, copper, tungsten

Question 11

molybdenum - causes

cases are rare and toxicity symptoms include diarrhea, slow growth, and anemia characterized by failure of rbc to mature

Answer 11

Mo toxicity

Question 12

molybdenum

milk and milk products, whole grains, legumes (peas and beans), and meat are common sources of molybdenum

Answer 12

Mo food sources